University of Leeds Study Warns Thawing Permafrost Permeability Increases 100-Fold Accelerating Greenhouse Gas Escape

University of Leeds research finds thawing Arctic soil releases carbon 25 to 100 times faster, potentially triggering a self-reinforcing climate change cycle.

By: AXL Media

Published: Mar 30, 2026, 6:37 AM EDT

Source: Information for this report was sourced from University of Leeds

The Erosion of a Global Carbon Barrier

Permafrost has historically served as one of the planet's most critical defenses against global warming, acting as a frozen seal for vast subterranean carbon deposits. However, new experimental data from the University of Leeds suggests this barrier is failing far more rapidly than previously modeled. As Arctic temperatures rise, the soil is becoming between 25 and 100 times more permeable, transforming from a solid cap into a porous sieve. Professor Paul Glover, who led the research, noted that the release of these previously frozen gases represents a very real danger, particularly since the Arctic is warming four times faster than the rest of the globe.

Quantifying the Subterranean Carbon Threat

The scale of the potential atmospheric impact is staggering, with global permafrost estimated to contain approximately 1,700 billion tonnes of carbon. This volume is roughly three times the amount of carbon currently present in the Earth’s atmosphere. If the current warming trends continue, scientists expect a 42% loss of permafrost in the Arctic Circumpolar Permafrost Region by the year 2050. The research team argues that the sudden increase in soil permeability means that the timeline for greenhouse gas escape may be much shorter than earlier climate projections had anticipated.

Mapping the Critical Thaw Threshold

Through controlled experiments in the Leeds’ Petrophysics Laboratory, researchers tracked gas flow through model permafrost samples across a temperature range of -18°C to +5°C. The study identified a critical "danger zone" for gas escape between -5°C and 1°C, where the most dramatic shifts in permeability occurred. As the ice within the soil matrix begins to melt, it creates interconnected pathways that allow methane and carbon dioxide to migrate to the surface. This laboratory evidence brings the scientific community one step closer to confirming that thawing permafrost will not just follow climate change, but actively accelerate it through a feedback loop.